HVAC - Landlord Forum thread 358434

HVAC by lpadave on August 15, 2018 @15:03

OK, here's one for the HVAC people among us or LL's who can help ME.

Need to replace split 5 ton / w horizontal air handler (no furnace). 14 seer - single speed compressor, but I want variable OR multi-speed air handler blower.

I can't get a straight answer about the operational difference between Variable vs multi speed and I get multi answers (including the """huhhhhhh") about whether blower speed is controlled by air flow conditions within the air handler,....or is controlled by the thermostat.

I understand that with TWO SPEED blower motors, properly wired, a capable thermostat will run CIRCULATE function at lower speed and COOLING function at higher speed.

HELP ! ?

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Re: HVAC by lpadave on August 15, 2018 @15:07	[ Reply ]

...and do I need a special thermostat to control a multi-speed blower motor. All thermostats have now been changed out to digital / electronic.

Re: HVAC